Tracey Crouch: I need not do so, because the explanatory notes do it absolutely brilliantly. The lesson for anybody reading legislation is that they should do so alongside the explanatory notes, because that is what they are there for. May I instead recommend that the hon. Gentleman read paragraph 37 on page 10 of the explanatory notes, which gives an absolutely excellent explanation? When I took a picture of the clause and put it up on my personal Facebook page, a lot of my friends who have nothing to do with politics found it as interesting as  I did.
Turning to the clause itself, the second protocol requires parties to extend criminal responsibility to persons other than those who directly commit an act outlined in article 15, paragraph 1, of the protocol. It also obliges parties to assert extraterritorial jurisdiction in specified circumstances. The clause ensures that those obligations are fully implemented. Its purpose is to ensure that the UK has extraterritorial jurisdictions to try all ancillary offences in the same circumstances in which clause 3 establishes jurisdictions to try the substantive defence. It does not itself establish the ancillary offences, which already exist under other legislation and apply automatically to offences under clause 3. It applies only to ancillary defences if there is uncertainty about their extraterritorial application. Where the existing law is clear about extraterritorial application, as it is in relation to aiding and abetting and offences under the Serious Crime Act 2007, no provision is made. To make such express provision unnecessarily would be bad drafting practice and could create doubt about other situations for which no express provision is made.
Subsections (1) to (3) set out provisions about jurisdictions that mirror those for the principal offence set out in clause 3. In relation to any of the acts listed in article 15, paragraph 1, sub-paragraphs (a) to (c) of the second protocol, a person can be prosecuted for an ancillary offence committed abroad, regardless of their nationality. In contrast, in relation to ancillary offences concerned with the other acts set out in the article, only a UK national or a person subject to UK service jurisdiction can be prosecuted for an offence committed abroad.
Subsections (4), (5) and (6) take into account the differences in the criminal law in the different legal systems of the UK with regard to the definition of ancillary offences. The intention is to produce the same effect in each legal system. On Report in the other place, an amendment was made to subsection (6) to ensure that the Bill’s provision relating to ancillary offences has the intended effect in Scotland. The amendment was tabled by the Government following consultation with the Crown Office and the Scottish Government. I am grateful to the devolved Administrations for their help and support in drafting the Bill.
Subsection (7) ensures that offences that are ancillary to ancillary offences are also provided for.
I hope that, following that explanation, the Committee is fully appraised of the intention of the clause.